Klinger Level Gauges
TRANSPARENT LEVEL GAUGES
In this kind of level gauge, the medium is contained within two glasses whose surfaces are both smooth. The medium level can be easily observed looking through the glasses.
Thanks to its resistant glasses, this level gauge is particularly suited to be used with aggressive media or in the presence of steam, since protective mica shields can be installed between the medium and the glass.
In order to improve visibility under special operating conditions, an illuminator can be mounted on one side of the transparent level gauge.
REFLEX LEVEL GAUGES
Reflex level gauges allow the medium to be viewed through a reflex glass: the side of the glass which is exposed to the medium has a prismatic surface, while the other side is smooth. The medium level inside the level gauge is indicated as the result of the light refraction principle, since the liquid filled area completely absorbs the rays of light and appears dark, whereas the rays of light are totally reflected in the gas/air filled area which appears bright.
Reflex level gauges offer great advantages in terms of low purchase and maintenance costs, as well as easy level reading. Anyway, they cannot be used in certain cases, for example when the separation level between two liquids has to be read, when the observation of the liquid colour is required or when the fluid to be measured is high-pressure water steam.
BI-COLOUR LEVEL GAUGES
Bi-colour level gauges are a variation of transparent level gauges and are mainly used to measure very high-pressure water steam. These gauges feature two flat transparent glasses which, together with the gauge body, form the chamber containing the medium.
A special red and green illuminator is mounted on the rear side of the gauge body to obtain a double lighting system.
? Red light for the steam
? Green light for the liquid